Installation Instructions F61
Issue Date May 30, 2014
F61 Series Standard Flow Switches
Installation
IMPORTANT: Use this F61 Series Standard Flow
Switch only to control equipment
under normal operating conditions.
Where failure or malfunction of the
flow switch could lead to personal
injury or property damage to the
controlled equipment or other
property, additional precautions must
be designed into the control system.
Incorporate and maintain other
devices, such as supervisory or
alarm systems or safety or limit
controls, intended to warn of or
protect against failure or malfunction
of the flow switch.
IMPORTANT: Utiliser ce F61 Series Standard Flow
Switch uniquement pour commander
des équipements dans des
conditions normales de
fonctionnement. Lorsqu'une
défaillance ou un dysfonctionnement
du flow switch risque de provoquer
des blessures ou d'endommager
l'équipement contrôlé ou un autre
équipement, la conception du
système de contrôle doit intégrer des
dispositifs de protection
supplémentaires. Veiller dans ce cas
à intégrer de façon permanente
d'autres dispositifs, tels que des
systèmes de supervision ou
d'alarme, ou des dispositifs de
sécurité ou de limitation, ayant une
fonction d'avertissement ou de
protection en cas de défaillance ou
de dysfonctionnement du flow switch.
Some models of the F61 Series Standard Flow
Switches require installation or adjustment of paddles
prior to mounting. See Installing the Flow Paddles.
© 2014 Johnson Controls, Inc.
Part No. 24-8407-4, Rev. D
Parts Included
Standard models of the F61 flow switch include an
installed three-piece flow paddle. Some models also
include a large flow paddle for large pipe sizes.
Table 1: Replacement Parts
Kit Number
Description
KIT21A-600
Stainless Steel Three-piece Paddle
(3 in., 2 in., and 1 in. Segments)
KIT21A-601
Stainless Steel 6 in. Paddle
PLT52A-600R
Stainless Steel Three-piece Paddle
(3 in., 2 in., and 1 in. Segments) and
6 in. Paddle
CVR62A-600R
Replacement Cover Assembly for LB,
MB, MD, and MG types
Installing the Flow Paddles
IMPORTANT: To allow the switch to detect changes
in the fluid flow, the flow paddle must not touch the
pipe or any restrictions in the pipe.
Adjust flow paddles to the size of the pipe used. If
needed, trim the large flow paddle at the arc
corresponding to pipe size (see Figure 1 and Figure 2)
and install.
Flow
Paddle
Screw
Trim flow paddles to fit
pipe diameter or remove
flow paddles that are
too large to fit pipe diameter.
Figure 1: Installing the Paddles
1
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1-1/2 in.
2 in.
1 in.
2-1/2 in.
3 in.
5 in.
4 in.
Original
Length
Figure 2: Trimming Diagram for Large Flow Paddle
Dimensions
4
(102)
2
(51)
7/8
Diameter Hole for 1/2 in. Trade Size Conduit
(22)
1-1/16 Diameter Knockout Ring for 3/4 in. Trade Size Conduit
(27)
2-3/4
1-3/8
(71)
(35)
Dimension by
Liquid Line Size
A
B
1 1-7/16 1
(25) (37) (25)
2-11/16
(68)
1-3/4
(44)
1-1/4
(33)
Use these
wrench flats
to tighten
the flow switch
at installation.
1 in.
11-1/2 NPT
4-3/4
(121)
Grounding
Screw
Hole
1-1/8
(29)
2
(51)
2-1/2 1-1/8
(64) (29)
3
(76)
3-1/2 1-1/8
(89) (29)
4
6-5/8 1-1/8
(101) (168) (29)
A
B
Paddle
Screw
5
6-5/8 1-1/8
(152) (168) (29)
Figure 3: NEMA 1 Enclosure (F61KB Types) Dimensions, in. (mm)
2
F61 Series Standard Flow Switches Installation Instructions
6 in.
3-11/16
(94)
1-13/16
(47)
1-1/8 On MB and MG Types
(29)
1/2-14 NPSM Thread
5/8
On LB Types
(15)
2-3/4
1-3/8
(71)
(35)
2-7/8
(73)
1-9/16
(40)
1-1/4
(33)
Use these
wrench flats
to tighten
the flow switch
at installation.
4-3/4
(121) 1-1/16
(27)
Dimension by
Liquid Line Size
A
B
1 1-7/16 1
(25) (37) (25)
2
(51)
2-1/2 1-1/8
(64) (29)
3
(76)
3-1/2 1-1/8
(89) (29)
4
6-5/8 1-1/8
(101) (168) (29)
5
6-5/8 1-1/8
(152) (168) (29)
1 in. 11-1/2 NPT
Paddle
Screw
A
B
Figure 4: NEMA 3 or NEMA 3R Enclosure (F61LB, F61MB, F61MG Types) Dimensions, in. (mm)
used, install a face or hex bushing in the top
Mounting
opening to reduce it to 1 in.
IMPORTANT: To avoid damaging the switch, do not
tighten the switch to the tee by grasping the switch
enclosure. Use only the wrench flats provided.
Mount the F61 Series Flow Switch, using the following
guidelines:
•
Install the switch so that the cover and interior are
accessible.
•
Mount the switch so that the flow of fluid is in the
direction of the arrow on the switch casing.
•
Use a pipe union on each side of the flow switch to
allow easy removal or replacement.
•
Mount the switch so that the pipe does not extend
too far into the flow switch casing.
•
Use pipe thread sealer on male threads only.
•
Do not remove the cover gasket or the wire
grommet from the conduit opening.
Mount the flow switch so the terminals or wire leads
are easily accessible for wiring. Screw the flow switch
in position so the flat of the paddle is at a right angle to
the flow. The arrow on the side of the case must point
in the direction of the flow.
Location Considerations
Mount the F61 flow switch in a horizontal pipeline or a
vertical pipeline with upward fluid flow. Do not use in a
vertical pipeline with downward flow. When mounted in
a vertical pipe with upward flow, the switch trips at a
slightly higher flow than shown in Table 3 through
Table 6, due to the effect of gravity on the switch
mechanism.
Mount the F61 flow switch in a section of pipe where
there is a straight run of at least five pipe diameters on
each side of the flow switch from the nearest elbow,
valve, or other pipe restriction. See Figure 5.
For 1 in. pipe installation, mount the F61 flow switch in
a standard 1 in. x 1 in. x 1 in. tee. For larger sizes of
pipe, use a reducing tee to keep the flow switch close
to the pipe and provide adequate paddle length in the
flow stream.
Example: Use a 2 in. x 2 in. x 1 in. tee for a
2 in. pipe. If a standard 2 in. x 2 in. x 2 in. tee is
F61 Series Standard Flow Switches Installation Instructions
3
IMPORTANT: To prevent moisture from entering
and condensate from forming inside the NEMA 3R
enclosure, do not remove the cover gasket or the
wire grommet from the conduit opening.
Tee or Welded
Half-coupling
A
A
Dimension A must be at least
five pipe diameters from the nearest
elbow, valve, or other pipe restriction.
Figure 5: Required Piping Distance
Do not subject the flow switches to water hammer.
Use a suitable water hammer arrester if a fast-closing
valve is located downstream of the flow switch. See
Figure 6.
IMPORTANT: Install all wiring in accordance with
the National Electrical Code and local regulations.
Make all wiring connections using copper conductors
only. Do not exceed the control’s electrical rating.
The F61KB and F61LB models have three color-coded
terminals. Red is common. See Table 2 and Figure 1
for switch action.
The F61MB and F61MG models have four color-coded
wire leads. Red is common, green is ground. See
Table 2.
Table 2: Switch Action
Flow
Flow
Switch
Water
Hammer
Arrester
Flow Action
Switch Closure
Increase
Red to Yellow
Decrease
Red to Blue
Valve
Red
Wiring
!
Yellow
WARNING: Risk of Electric Shock.
Disconnect the power supply before making
electrical connections. Contact with components
carrying hazardous voltage can cause electric shock
and may result in severe personal injury or death.
AVERTISSEMENT: Risque de décharge
électrique.
Débrancher l'alimentation avant de réaliser tout
branchement électrique. Tout contact avec des
composants conducteurs de tensions dangereuses
risque d'entraîner une décharge électrique et de
provoquer des blessures graves, voire mortelles.
IMPORTANT: Using terminal screws other than
those provided will void the warranty and may
damage the switch. Use only the terminal screws
furnished.
4
Decrease in Flow
Above Setpoint
Increase in Flow
Above Setpoint
Figure 6: Water Hammer Arrester Location
Schematic
Blue
Figure 7: Switch Action
Setup and Adjustments
!
WARNING: Risk of Electric Shock.
Disconnect the power supply before making
electrical connections. Contact with components
carrying hazardous voltage can cause electric shock
and may result in severe personal injury or death.
AVERTISSEMENT: Risque de décharge
électrique.
Débrancher l'alimentation avant de réaliser tout
branchement électrique. Tout contact avec des
composants conducteurs de tensions dangereuses
risque d'entraîner une décharge électrique et de
provoquer des blessures graves, voire mortelles.
F61 Series Standard Flow Switches Installation Instructions
IMPORTANT: The switch is factory set at
approximately the minimum flow rate (see Table 3
through Table 6). Do not set lower than the factory
setting because that may result in the switch failing to
return to a no flow position.
Adjusting
Screw
IMPORTANT: Sealed settings (screws marked with
black paint) are not intended to be changed.
Adjustment attempts may damage the control or
cause loss of calibration, voiding the warranty.
Main
Lever
To adjust the setting of the flow switch:
1. Disconnect power supply before making electrical
connections.
Figure 9: Minimum Adjustment
2. Remove the F61 flow switch cover.
3. Turn the adjusting screw clockwise to raise the
flow rate. Turn the adjusting screw
counterclockwise to lower the flow rate. See
Figure 8.
4. Replace the cover after completing adjustments.
Tighten the cover screws to 12 in⋅lbs of torque.
Note: Do not lower the flow rate unless it has been
raised from the factory setting.
Lower Flow Rates
Less liquid flow
required to switch
from R-Y to R-B.
Red
Higher Flow Rates
More liquid flow
required to switch
from R-Y to R-B.
Yellow
Blue
Adjusting Screw
Figure 8: Flow Rate Adjustment
To verify that the flow rate is set above the factory
minimum (see Figure 9):
1. Depress the main lever numerous times. If the
lever fails to click upon return at any time, the flow
rate is set below the factory-set minimum.
2. Raise the flow rate to approximately the factory
minimum by turning the adjusting screw clockwise
until the lever clicks upon return every time.
F61 Series Standard Flow Switches Installation Instructions
5
Typical Flow Rates for Standard F61 Flow Switches
Table 3: F61KB, F61LB, and F61MB Models, 1-3 in. Paddles
3
Pipe Size (in.)
Minimum
Adjustment
Maximum
Adjustment
1.
2.
3.
1
GPM (m /hr) Required to Actuate Switch
1-1/41 1-1/21
2
2-1/22
3
43
53
63
83
Flow
Increase
(R to Y
Closes)
4.20
(0.95)
5.80
(1.32)
7.50
(1.70)
13.7
(3.11)
18.0
(4.09)
27.5
(6.24)
65.0
(14.8)
125
(28.4)
190
(43.2)
375
(85.2)
Flow
Decrease
(R to B
Closes)
2.50
(0.57)
3.70
(0.84)
5.00
(1.14)
9.50
(2.16)
12.5
(2.84)
19.0
(4.32)
50.0
(11.4)
101
(22.9)
158
(35.9)
320
(72.7)
Flow
Increase
(R to Y
Closes)
8.80
(2.0)
13.3
(3.02)
19.2
(4.36)
29.0
(6.59)
34.5
(7.84)
53.0
(12.0)
128
(29.1)
245
(55.6)
375
(85.2)
760
(173)
Flow
Decrease
(R to B
Closes)
8.50
(1.93)
12.5
(2.84)
18.0
(4.09)
27.0
(6.13)
32.0
(7.27)
50.0
(11.4)
122
(27.7)
235
(53.4)
360
(81.8)
730
(166)
Values for 2 in. paddle trimmed to fit pipe.
Values for 3 in. paddle trimmed to fit pipe.
Values calculated for factory-installed set of 1, 2, and 3 in. paddles.
Table 4: F61KB, F61LB, and F61MB Models, 6 in. Paddles*
GPM (m3/hr) Required to Actuate Switch
Pipe Size (in.)
Minimum
Adjustment
Maximum
Adjustment
*
6
4
5
6
8
Flow Increase (R to Y Closes)
37.0 (8.40)
57.0 (12.9)
74.0 (16.8)
205 (46.6)
Flow Decrease (R to B Closes)
27.0 (6.13)
41.0 (9.31)
54.0 (12.3)
170 (38.6)
Flow Increase (R to Y Closes)
81.0 (18.4)
118 (26.8)
144 (32.7)
415 (94.3)
Flow Decrease (R to B Closes)
76.0 (17.3)
111 (25.2)
135 (30.7)
400 (90.8)
Where paddle size is larger than pipe size, values are for 6 in. paddle trimmed to fit pipe.
F61 Series Standard Flow Switches Installation Instructions
Table 5: F61MG Models, 1-3 in. Paddles
Pipe Size (in.)
Minimum
Adjustment
Maximum
Adjustment
1.
2.
3.
1
GPM (m3/hr) Required to Actuate Switch
1-1/41 1-1/21
2
2-1/22
3
43
53
63
83
Flow
Increase
(R to Y
Closes)
3.80
(0.86)
5.30
(1.20)
6.90
(1.57)
12.7
(2.88)
16.7
(3.79)
24.3
(5.52)
61.0
(13.8)
118
(26.8)
183
(41.6)
362
(82.2)
Flow
Decrease
(R to B
Closes)
2.50
(0.57)
3.70
(0.84)
5.00
(1.14)
9.50
(2.16)
12.5
(2.84)
19.0
(4.32)
50.0
(11.4)
101
(22.9)
158
(35.9)
320
(72.7)
Flow
Increase
(R to Y
Closes)
8.70
(1.98)
13.1
(2.98)
18.8
(4.27)
28.9
(6.56)
33.7
(7.65)
52.1
(11.8)
126
(28.6)
243
(55.2)
372
(84.5)
753
(171)
Flow
Decrease
(R to B
Closes)
8.50
(1.93)
12.5
(2.84)
18.0
(4.09)
27.0
(6.13)
32.0
(7.27)
50.0
(11.4)
122
(27.7)
235
(53.4)
360
(81.8)
730
(166)
Values for 2 in. paddle trimmed to fit pipe.
Values for 3 in. paddle trimmed to fit pipe.
Values calculated for factory-installed set of 1, 2, and 3 in. paddles.
Table 6: F61MG Models, 6 in. Paddles*
Pipe Size (in.)
GPM (m3/hr) Required to Actuate Switch
4
5
6
8
Minimum
Adjustment
Flow Increase (R to Y Closes)
35.0 (7.95)
53.0 (12.0)
69.0 (15.7)
197 (44.7)
Flow Decrease (R to B Closes)
27.0 (6.13)
41.0 (9.31)
54.0 (12.3)
170 (38.6)
Maximum
Adjustment
Flow Increase (R to Y Closes)
80.0 (18.2)
116 (26.3)
142 (32.2)
412 (93.6)
Flow Decrease (R to B Closes)
76.0 (17.3)
111 (25.2)
135 (30.7)
400 (90.8)
*
Where paddle size is larger than pipe size, values are for 6 in. paddle trimmed to fit pipe.
Checkout
IMPORTANT: Ensure installation, wiring, and control
settings are according to the application
requirements. Refer to the controlled system’s
manufacturer specifications for the proper settings
when adjusting these controls.
Apply power to the control and controlled equipment.
Cycle the controlled system at least three times at
normal operating conditions.
The circuit between the red and the yellow leads
(terminals) closes when sufficient fluid flows through
the pipe to trip the F61 flow switch.
F61 Series Standard Flow Switches Installation Instructions
7
Troubleshooting
Repairs and Replacement
Use the information in Table 7 to troubleshoot the flow
switch.
Do not make field repairs, except for replacement of
the cover and paddles. For a replacement flow switch,
paddle kit or cover, contact the nearest
Johnson Controls/PENN™ distributor. For more
information, contact Refrigeration Application
Engineering at (800) 275-5676.
Table 7: Troubleshooting
Symptom/Problem
Solution
Water (condensate) is within the enclosure.
Use a model with a NEMA 3R enclosure. If using a model with
a NEMA 3R enclosure, inspect the grommet in the conduit
fitting. Replace grommet if defective.
Fluid from the tank is leaking into enclosure due to
bellows failure.
Replace flow switch.
Switch does not activate due to debris caught within
the switch mechanism.
Clear any debris within the switch mechanism. Test the
operation of switch several times for proper operation.
Control switch action is reversed.
Ensure connections follow wiring diagrams.
Control does not switch.
Check connections.
Switch fails to return to the no flow position.
Switch is set lower than the factory setting. Increase the setting.
On vertical pipes, ensure that direction of flow is up. The arrow
on switch must point in direction of flow (up).
Control does not switch on flow increase.
Check for cracked/broken paddle. Replace if necessary.
Electrical Ratings
Table 8: Electrical Ratings for F61KB, F61LB, and F61MB Models
Electrical Ratings
120 VAC
208 VAC
240 VAC
277 VAC
Horsepower
1
1
1
-
Full Load Amperes
16.0
8.8
8.0
-
Locked Rotor Amperes
96.0
52.8
48.0
-
Non-inductive Amperes
16.0
16.0
16.0
16.0
Pilot Duty
125 VA at 24/277 VAC
Table 9: Electrical Ratings for F61MG Models
8
Electrical Ratings
120 VAC
Full Load Amperes
1
Locked Rotor Amperes
6
Non-inductive Amperes
2
Pilot Duty
125 VA at 24/277 VAC
F61 Series Standard Flow Switches Installation Instructions
Technical Specifications
Product
Maximum Fluid Pressure
F61 Series Standard Flow Switches
150 psig (1034 kPa)
Minimum Fluid
Temperature
32°F (0°C) (F61KB, F61LB)
-20°F (-29°C) (F61MB, F61MG)
Maximum Fluid
Temperature
250°F (121°C)
Switch
Wiring Connections
Pipe Connector
Conduit Connection
UL Listed
Agency
Listings
CSA
Certified
Shipping Weight
Single Pole Double Throw
Screw Type Terminals (F61KB, F61LB)
Four Color-coded No. 14 AWG Solid Conductor Wire Leads, 7 in. (178 mm) Long (F61MB,
F61MG)
1 in. 11-1/2 NPT Threads
One 7/8 in. (22 mm) Hole for 1/2 in. Conduit with 1-1/8 in. (29 mm) Knockout Ring for
3/4 in. Conduit (F61KB)
Female Hub for 1/2 in. Conduit, 1/2-14 NPSM Threads (F61LB, F61MB, F61MG)
E5368, CCN NMFT
LR948, Class 3211 06, Class 4813 02, Class 1222 01 (F61KB)
(F61LB - Not CSA Certified)
LR948, Class 3211 06 (F61MB, F61MG)
2.8 lb (1.3 kg)
The performance specifications are nominal and conform to acceptable industry standards. For application at conditions beyond these
specifications, consult the local Johnson Controls office. Johnson Controls, Inc. shall not be liable for damages resulting from misapplication or
misuse of its products.
Refer to the F61 Series Flow Switches Product/Technical Bulletin (LIT-125225) for necessary information on operating and performance
specifications of this product.
Building Efficiency
507 E. Michigan Street, Milwaukee, WI 53202
® Johnson Controls and PENN are registered trademarks of Johnson Controls, Inc. in the
United States of America and/or other countries. All other trademarks used herein are the property
of their respective owners. © Copyright 2014 by Johnson Controls, Inc. All rights reserved.
F61 Series Standard Flow Switches Installation Instructions
9